What to Look For in a Professional Espresso Machine You'll want a machine that can be controlled the pre-infusion, which is essential for developing aroma and flavor. PID temperature control is also a feature that many coffee experts search for in an espresso machine that is professional. If you're planning https://www-coffeee-uk70118.smblogsites.com/29837985/5-things-everyone-gets-wrong-about-buy-espresso-machine